Get total minutes between 2 date time

I need to get a total minutes between 2 date time with the requirement where the time fall to another date should not count the minutes for the StartDate. Eg data as below

  ID        Start                End            taskId            EmployeeId
   1   2023-11-1 20:30:00  2023-11-1 23:30        2                  1
   2   2023-11-1 21:30:00  2023-11-1 23:30        2                  2
   3   2023-11-1 20:30:00  2023-11-2 01:30        2                  3
   4   2023-11-2 20:30:00  2023-11-2 23:30        2                  1
   5   2023-11-2 20:30:00  2023-11-2 23:30        2                  2
   6   2023-11-2 20:30:00  2023-11-3 00:30        2                  3

Start and End Column data type are dateTime, the rest 2 are int.

The data row 3, the total minute count from 20:30 to 00:00, then the 1 and the half hour fall on 2023-11-2, the minutes should count to the date for 2023-11-2. It is possible to do so?

Select 
    Case
    When 
        (Cast(EndDate as date) = Cast(EndDate as date) and Cast(StartDate as date) != Cast(EndDate as date)) then DateDiff(minute, Convert(datetime, Convert(varchar, Cast(EndDate as date)) + ' 00:00:00'), enddate)
    When
        DateDiff(Day, StartDate, EndDate) = 1 then DateDiff(Minute, StartDate, Convert(datetime, Convert(varchar, DateAdd(day, 1, Cast(StartDate as date))) + ' 00:00:00')) 
    else 
        DateDiff(MINUTE, StartDate, EndDate) End as [Total 
    Minutes], EmployeeId, taskId
From
    tbl
Group By
  EmployeeId, taskId

Expected result

   Start                End           taskId   EmpId       minutes
2023-11-1 20:30:00  2023-11-1 23:30        2         1       180
2023-11-1 21:30:00  2023-11-1 23:30        2         2       120
2023-11-1 20:30:00  2023-11-2 01:30        2         3       210
2023-11-1 20:30:00  2023-11-2 01:30        2         3        90
2023-11-2 20:30:00  2023-11-2 23:30        2         1       180
2023-11-2 20:30:00  2023-11-2 23:30        2         2       180
2023-11-2 20:30:00  2023-11-3 00:30        2         3       210
2023-11-2 20:30:00  2023-11-3 00:30        2         3        30

Another approach could be to gather the rows seperate if they pass midnight

I get all rows that start and end on the same day
then all rows that pass midnight with the enddate on midnight
then all rows from midnight until enddate

now I use that collection to calculate the differences

I made an example in this dbFiddle

it looks something like this

select t.ID,
       t.StartDate,
       t.EndDate,
       t.TaskID,
       t.EmployeeID,
       DATEDIFF(mi, DATEADD(hh, DATEDIFF(mm, t.StartDate, t.EndDate), t.StartDate), t.EndDate) as Mins
from   ( select d.ID, d.StartDate, d.EndDate, d.TaskID, d.EmployeeID
         from dates d
         where  convert(date, d.startdate) = convert(date, d.enddate)
         union all
         select d.ID, d.StartDate, dateadd(dd, 1, convert(datetime, convert(date, d.StartDate))), d.TaskID, d.EmployeeID
         from dates d
         where  convert(date, d.startdate) < convert(date, d.enddate)
         union all
         select d.ID, convert(datetime, convert(date, d.EndDate)), d.EndDate, d.TaskID, d.EmployeeID
         from dates d
         where  convert(date, d.startdate) < convert(date, d.enddate)
       ) t
order by t.ID, t.StartDate

and the result is